Some more birds at the feeder with the sigma 500mm f7.2, samsung NX20.
This image showed some more significant CA - purpling seeping into the head and neck of the tit. Ameliorated with fringing tools and reducing purple luminence and saturation in LR3.
1:1 pixel peeping crop of a mallards head. At 800ASA the NX20 is much noisier than the K5, but the underrlying resolution is quite good.
---------- Post added 25th Jan 2017 at 23:52 ----------
These nuthatches however were with a tamron adaptall 55BB 500mm mirror. Also NX20. i am inclined to give the advantage, at least in resolution, to the sigma.
Last edited by marcusBMG; 01-25-2017 at 04:53 PM.